I'm trying to adjust the display settings on the installation of Corel Linux OS (Desktop Version 1.2, Kernel Version 2.2.16) on my Dell Inspiron 7500 with an ATI Rage Mobility M/M/1/P video card (I've got Corel Linux on a DOS/Windows partition on this computer). After starting Corel Linux logging in as root, I go to Control Center > Settings > Desktop > Display Settings and then choose the new setting I want under Screen Resolution, and then I hit the Test Settings button, click on the Accept button on the screen that appears, and then I'm taken back to the Display Settings tab window. Whether I click on the Apply or OK buttons, I get the window "Test Settings--Save your work in any open applications, log out, and press Ctl-Alt-Backspace to restart the X server." I hit OK, close the Control Center window and logout. I see the "This Corel Linux session is prepared for Logout" screen, and I hit Ctl-Alt Backspace. I get the Login screen, but the whole screen is the same resolution as before I when I tried to change it. Even if I hit "O.K." after "This Corel Linux session is prepared for Logout," I'm taken back to the login screen at old resolution. Hitting "Ctl-Alt Backspace" at this point also does nothing but give me the login screen, at the old resolution.

Any help with enabling me to adjust my display resolution would be greatly appreciated. Thanks in advance.